# std::chrono::operator==,<,<=,>,>=,<=>(std::chrono::leap_second)

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< cpp‎ | chrono‎ | leap second

Defined in header `<chrono>` |  |
constexpr bool operator==( const std::chrono::leap_second& x, const std::chrono::leap_second& y ) noexcept; | (1) | (since C++20)
constexpr std::strong_ordering operator<=>( const std::chrono::leap_second& x, const std::chrono::leap_second& y ) noexcept; | (2) | (since C++20)
template< class Duration > constexpr bool operator==( const std::chrono::leap_second& x, const std::chrono::sys_time<Duration>& y ) noexcept; | (3) | (since C++20)
template< class Duration > constexpr bool operator< ( const std::chrono::leap_second& x, const std::chrono::sys_time<Duration>& y ) noexcept; | (4) | (since C++20)
template< class Duration > constexpr bool operator< ( const std::chrono::sys_time<Duration>& x, const std::chrono::leap_second& y ) noexcept; | (5) | (since C++20)
template< class Duration > constexpr bool operator> ( const std::chrono::leap_second& x, const std::chrono::sys_time<Duration>& y ) noexcept; | (6) | (since C++20)
template< class Duration > constexpr bool operator> ( const std::chrono::sys_time<Duration>& x, const std::chrono::leap_second& y ) noexcept; | (7) | (since C++20)
template< class Duration > constexpr bool operator<=( const std::chrono::leap_second& x, const std::chrono::sys_time<Duration>& y ) noexcept; | (8) | (since C++20)
template< class Duration > constexpr bool operator<=( const std::chrono::sys_time<Duration>& x, const std::chrono::leap_second& y ) noexcept; | (9) | (since C++20)
template< class Duration > constexpr bool operator>=( const std::chrono::leap_second& x, const std::chrono::sys_time<Duration>& y ) noexcept; | (10) | (since C++20)
template< class Duration > constexpr bool operator>=( const std::chrono::sys_time<Duration>& x, const std::chrono::leap_second& y ) noexcept; | (11) | (since C++20)
template< class Duration > requires std::three_way_comparable_with< std::chrono::sys_seconds, std::chrono::sys_time<Duration>> constexpr auto operator<=>( const std::chrono::leap_second& x, const std::chrono::sys_time<Duration>& y ) noexcept; | (12) | (since C++20)

Compares the date and time represented by the objects x and y.

Return type of (12) is deduced from x.date() <=> y, and hence the three-way comparison result type of std::chrono::seconds and `Duration`.

The `!=` operator is synthesized from `operator==`.

### Return value

1) x.date() == y.date()
2) x.date() <=> y.date()
3) x.date() == y
4) x.date() < y
5) x < y.date()
6) x.date() > y
7) x > y.date()
8) x.date() <= y
9) x <= y.date()
10) x.date() >= y
11) x >= y.date()
12) x.date() <=> y
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